I understood after trying it.
This leash is really good!
It's cool!
『 CROW HALEY 』 Surf Leash [REGULAR 6′] MADE IN USA
"CROW HALEY Surf Leash" has been made
in San Diego, Southern California since 1979 with a commitment to being MADE IN USA ( American Country ) and is
hand- made with high quality, one by one !
This is a professional leash cord that is flexible and tangle-free.
COMP DOUBLE SWIVEL
Color: Black ONLY
Body ¥3900 Tax included ¥4212
Regular Double Swivel
Color: Black ONLY
Body ¥4200 Tax included ¥4436

*The manufacturer's product description is below.
CROW HALEY Surf Leashes have been made in San Diego, Southern California since 1979, with a commitment to being made in the USA (American country), and each and every one is hand-made with high quality.
Owner and leash cord craftsman Crow Haley doesn't even have a phone in his office, and would rather make as many leashes as possible than take orders over the phone.
For this reason, he is so strict that he only sells his products at select core stores in California, and many brands seek out his high-quality skills to create leash cords on an OEM basis.
This flexible, tangle-free leash is a favorite among San Diego locals. *It also comes with a key pocket.

Resin tint boards,

It's the perfect match for SON OF COBRA!
*The reason they only use black is because black is the most flexible, tangle-resistant, and strong!